Episode 6 9 th 11 th January 90 minutes by Rajesh Kumar Mahabharat rounds will also serve as qualifiers for Indian Championship for year 2016. Please check http://logicmastersindia.com/sm/2015-16.asp for details. Important Links Submission Page : http://logicmastersindia.com/sm/201601/ Discussion Thread : http://logicmastersindia.com/sm/201601/discuss.asp F. A. Q. : http://logicmastersindia.com/t/?tid=381 Registration, if required : http://logicmastersindia.com/register.asp
About this Episode Apart from classic s of different sizes, this episode has five twisted variants of Classic, namely Overlapping, Linked, Disjoint, Mirror, Twin Givens. How to participate? Understand the rules of different s that will appear in this episode. This Instruction Booklet has rules for each. Download the password protected booklet (will be uploaded before the test starts). The booklet contains the actual s to be solved. It is password protected, so you won t be able to open it. Any time during the given weekend, login at the submission page using your LMI userid and password. Please check the submission page for exact timing. Click on Start. At this time, password for pdf will be shown and timer will start. You can either solve online using flash interface or print the pdf and solve on paper. Each will be marked with two arrows If solving on paper o Fill the answer form with digits along the marked arrow(s) o Click submit button If solving online o After solving the, click on Submit button below the grid o Each grid has different submit buttons If you are participating at LMI for first time, you must check the F.A.Q. at http://logicmastersindia.com/t/?tid=381. Points Table and Scoring Points typically indicate difficulty of the s and time required to solve them. While the organizers have made best efforts to match them, your personal experience and preference may differ. This test uses instant grading where a solver can submit any individual and receive confirmation that the solution is correct or not. Each incorrect submission reduces the sudoku s potential score. The first, second, third, and fourth incorrect submission reduces the potential score to 90%, 70%, 40%, and 0% respectively. Bonus Standard 6X6 1, 1, 1, 1 Standard 8X8 4 Standard 9X9 11, 6, 7 Overapping 6X6, 9X9 3, 16 Linked Classics 6X6, 9X9 5, 16 Disjoint 6X6, 9X9 1, 9 Mirror 6X6, 9X9 1, 7 Twin Givens 6X6, 9X9 2, 8 If you submitted all s correctly, you can have bonus points 1 point per minute saved, computed upto seconds.
General Rules To make the rules less repetitive, you will see following line Apply standard rules in most rules. This means Place a digit from 1 to N, where N is the size of the grid, in each empty cell so that each digit appears exactly once in each row, column and outlined region. These outlined regions could be 3X3 boxes, or other shapes. Each will be marked with, at max, 2 lettered arrows. If you are solving on paper, you need to submit the digits in these arrows, in order, including the givens. For example, the answer key for the at the right is 162897453, 517698432. In Twin Givens, you need to enter X for blank cells. A B 3 8 7 4 6 5 1 2 9 9 5 4 2 3 1 7 6 8 1 6 2 8 9 7 4 5 3 2 9 3 1 4 6 8 7 5 8 7 1 5 2 9 3 4 6 5 4 6 3 7 8 9 1 2 7 2 5 9 8 4 6 3 1 6 1 9 7 5 3 2 8 4 4 3 8 6 1 2 5 9 7 About the Booklet The password protected booklet will have 9 pages. If you are planning to solve on paper, we advise you to have a printer accessible with enough paper. The booklet will look exactly like next 9 pages in this instruction booklet. The font sizes, cell sizes, colors, borders, shading, margin will be identical. We recommend you to print few pages of this instruction booklet. You can avoid any last minute surprise during the test. Also, we strongly advise you to save the pdf file on your computer, open the pdf (with the password) using Adobe Acrobat Reader and then print. If you print directly from the browser (for example Google Chrome), unintentional printing problems may arise (see this post for details http://logicmastersindia.com/t/?tid=1189).
P a g e 1 Standard Place a digit from 1 to 6 in each empty cell so that each digit appears exactly once in each row, column and 2X3 box. 1 point 1 point B A 1 2 3 5 3 4 1 5 5 6 1 3 1 3 6 4 3 2 3 1 1 5 2 4 1 point 1 point C D 2 3 4 5 1 4 5 3 5 6 1 4 1 3 4 5 2 3 5 6 4 6 2 1
Standard 4 points Place a digit from 1 to 8 in each empty cell so that each digit appears exactly once in each row, column and 2X4 box. E F 7 3 1 2 3 4 4 5 6 7 8 1 2 3 4 5 4 6 7 8 5 6 P a g e 2 Standard 11 points Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3X3 box. G H 1 8 8 7 4 2 9 4 2 3 9 3 7 5 4 6 9 5 7 1 6 5 1 4 6 3 6 7
Standard 6 points Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3X3 box. 3 8 4 6 1 2 9 5 2 3 7 6 2 9 1 4 8 7 8 7 5 2 3 4 P a g e 3 J I 7 2 9 8 6 3 6 1 7 5 2 8 Standard 7 points Place a digit from 1 to 9 in each empty cell so that each digit appears exactly once in each row, column and 3X3 box. K L 3 7 1 6 9 5 1 8 6 9 2 3 1 7 6 8 7 1 7 3 5 4 8 9 5 9 3
P a g e 4 Overlapping 3 points 16 points 6 1 5 B Apply standard rules to each of the grids. Two grids are overlapping. A 3 4 3 6 2 4 1 C 7 6 8 4 2 2 5 6 3 4 7 2 5 7 1 8 6 2 6 2 9 7 9 3 6 1 D 4 5 2 3 6 8 4 3 9 1
P a g e 5 Linked 5 points 4 Apply standard rules to each of the grids. Two grids are linked to each other. The shaded cells must contain same digit in both the grids. E 2 1 5 1 3 5 F 6 4 4 4 3 3 1
Linked 16 points Apply standard rules to each of the grids. Two grids are linked to each other. The shaded cells must contain same digit in both the grids. G 1 2 9 P a g e 6 2 7 3 3 8 7 3 4 7 5 9 6 2 2 5 7 6 7 8 1 4 9 1 5 8 2 3 7 3 1 6 6 4 3 H 5 1 6 8 8 9 7 3 9 8 2 7 9
P a g e 7 Disjoint 1 point Apply standard rules. Additionally, no digit can appear in the same position in different 2X3 boxes. I 1 5 6 2 2 3 4 3 Disjoint 9 points Apply standard rules. Additionally, no digit can appear in the same position in different 3X3 boxes. J 2 3 9 6 1 1 4 8 7 6 7 5 8 2 3 1 4 K 3 4 3 5 6
P a g e 8 Mirror 1 point 1 L Apply standard rules. 2 6 The four corner boxes (top left, top right, bottom left, bottom right) all contain the same digit in symmetrical positions with respect to the center of the grid. 5 3 4 Mirror 7 points Apply standard rules. The four corner boxes (top left, top right, bottom left, bottom right) all contain the same digit in symmetrical positions with respect to the center of the grid. M 4 5 3 7 3 4 9 6 7 1 2 1 6 9 4 7 8 9 4 3 2 8 7 6 9 2 3 7 3 5 4 N
P a g e 9 Twin Givens 2 points Place digits from 1-4 in each row, column and 2x3 outlined box. Two cells will remain empty as these are twins and of the same value. No two twins can touch each other in orthogonal directions. Enter X for blank cells, while entering the answer key. N 3 1 2 3 1 Twin Givens 8 points Place digits from 1-7 in each row, column and 3x3 outlined box. Two cells will remain empty as these are twins and of the same value. No two twins can touch each other in orthogonal directions. Enter X for blank cells, while entering the answer key. O P 6 4 1 5 2 6 7 3 3 5 1 2 1 4 3 5 2 4 5 1 4 4 3 5 7 7 2 1 5
S o l u t i o n s Overlapping B A 6 2 1 5 3 4 4 5 3 1 6 2 4 3 6 4 2 1 5 3 5 1 2 3 4 6 5 1 4 5 6 2 3 1 2 3 6 4 5 1 2 2 1 5 3 4 6 D C 4 1 7 3 8 2 6 9 5 5 8 9 6 4 1 7 2 3 2 6 3 5 7 9 1 4 8 8 5 6 7 9 3 4 1 2 5 6 8 3 7 1 4 2 6 8 5 9 3 7 1 9 4 2 1 5 8 3 7 6 4 9 2 6 3 4 2 1 5 9 8 7 6 4 3 1 9 5 8 3 7 2 6 4 9 1 5 7 2 8 9 6 4 5 3 1 2 8 7 5 4 1 7 9 3 8 2 6 6 8 2 1 4 5 7 3 9 3 7 9 6 2 8 1 5 4
S o l u t i o n s Linked E 4 3 2 6 5 1 5 6 1 4 3 2 2 1 3 5 6 4 6 4 5 2 1 3 3 5 4 1 2 6 1 2 6 3 4 5 4 3 2 5 6 1 5 6 1 2 3 4 6 1 3 4 5 2 2 4 5 6 1 3 3 5 4 1 2 6 1 2 6 3 4 5 F G 1 7 6 2 3 8 9 5 4 5 2 8 9 4 7 1 3 6 9 4 3 1 6 5 8 2 7 3 5 2 4 9 1 6 7 8 6 1 7 8 5 2 4 9 3 8 9 4 3 7 6 5 1 2 2 3 5 6 8 9 7 4 1 4 6 9 7 1 3 2 8 5 7 8 1 5 2 4 3 6 9 H 1 7 6 5 4 9 8 2 3 5 2 8 6 1 3 9 7 4 9 4 3 7 2 8 1 5 6 6 8 7 4 9 1 5 3 2 3 9 4 8 5 2 6 1 7 2 1 5 3 7 6 4 9 8 8 6 9 2 3 5 7 4 1 7 3 1 9 6 4 2 8 5 4 5 2 1 8 7 3 6 9 I Disjoint 6 3 4 1 5 2 1 2 5 3 6 4 3 6 1 2 4 5 4 5 2 6 3 1 5 1 6 4 2 3 2 4 3 5 1 6 Mirror L 1 2 3 4 6 5 4 5 6 1 3 2 3 4 5 2 1 6 6 1 2 5 4 3 2 3 1 6 5 4 5 6 4 3 2 1
S o l u t i o n s Disjoint Mirror N 2 3 7 9 6 5 8 4 1 4 1 2 5 9 6 3 7 8 1 4 5 8 7 2 3 6 9 5 3 8 7 4 2 1 9 6 J 8 6 9 4 3 1 5 7 2 M 9 6 7 3 8 1 4 5 2 6 7 4 5 8 9 1 2 3 1 2 5 6 3 8 9 4 7 5 8 1 6 2 3 4 9 7 3 4 6 2 7 9 5 8 1 9 2 3 7 1 4 6 8 5 7 8 9 1 5 4 6 2 3 K 4 5 2 3 9 6 7 1 8 2 5 4 8 1 3 7 6 9 7 1 6 2 5 8 9 3 4 6 9 1 4 2 7 8 3 5 3 9 8 1 4 7 2 5 6 8 7 3 9 6 5 2 1 4 Twin Givens Twin Givens 6 7 2 4 3 1 5 N 1 2 4 3 4 3 1 2 3 1 2 4 2 4 3 1 2 1 3 4 4 3 1 2 O P 2 1 5 6 7 3 4 4 3 5 1 7 2 6 5 6 1 7 2 4 3 1 4 6 3 5 7 2 7 2 3 4 5 6 1 5 6 7 2 3 4 1 4 1 3 5 6 2 7 3 7 2 1 4 6 5